The Project

Our objective is to contrast the influence of local (summer) and non-breeding (passage/winter) environmental conditions on the population dynamics of the European Roller (Coracias garrulus) at two sites, one in Latvia where the remnant population is stable but increasingly isolated, the other in France, where the population has increased. These study populations are already the subject of detailed nest monitoring by experienced in-country scientists, and both adults and chicks are ringed with standard metal rings and plastic colour rings to allow future identification. We aim to contribute to and expand on this work to gain a deeper understanding of:

  1. How local landuse and invertebrate availability influence foraging behaviour and breeding success
  2. How conditions during migration and on the African wintering grounds ‘carry-over’ to influence the timing and success of breeding
  3. Whether nest site availability is limiting population density
  4. How non-breeding environmental conditions influence overwinter survival and whether survival contributes to variation in population density